Also, here's an update:Spoke to a Property Management Co. based in Northeast Philadelphia:They said that you will have to wait the 4-6 weeks to get the license and then the Certificate, apparently it does take them that long.I also spoke to a Philadelphia 3-1-1 line Government representative:He said alternatively you can walk down to the Philadelphia Municipals building and directly request for Rental License, however, he warned that you need to bring a MONEY ORDER for the dues as well as it taking 4+ hours on a business day.

Softwares can have differing "freshness" of data based on locations they support.For example, one software may update their pre-foreclosure list for Akron, Ohio 1x a week and another 1x a month.

I would think this would play a role in your vacancies and retention for tenants as long as they are screened correctly especially in south AL!

You can register your STR's at the link @Carrie Foley provided and the current response time is ~2 weeks based on my submissions.

That 6.1% number is based on 4,089 Charlotte MSA Single Family properties held by a large SFR REIT.

You could use that equity to buy way more proprety that spit out cash flow as opposed to a single family which is purely an equity play. 

You don't necessarily need a really built out one though - even just using an AirTable base (there are a lot of free templates out there) would probably give you what you need to stay organized.

It is all based on numbers: average tax increases, average insurance increases. 

I'm by no means an expert on 1031 exchanges but you can find experts on BiggerPockets if you end up needing them.There are a few other things that come to mind, I'll put them in order of most to least applicable based on the situation you've laid out.Offset any capital gains with capital losses - Maybe she owns some stock to use an easy example, and it hasn't done well. 

You seem to be focused on cash flow based on the emphasis placed on the 10 Cap in your pos but you also describe the neighborhood as "shady" which I interpret to be a lower barrier/ at best "C" neighborhood.